Brain Twister

From Author Wars - https://authorwars.com/publications/brain-twister-258159.html

Overview:

Title: Brain Twister
Author: Mark Phillips
Year: 2007
Publisher: Project Gutenberg
Price:
Binding: ebook
Type: Novel
Title Reference: Brain Twister
Notes: According to information at the beginning of the text, "This etext was produced from the 1962 book publication of the story.". The listings at the top of the edition give the authors' names as Gordon Randall Garrett and Laurence Mark Janifer; however, the listing within the text credits Mark Phillips, who "is, or are, two writers: Randall Garrett and Laurence M. Janifer".